Determine the hierarchical order of soil taxanomy, Science

Assignment Help:

Determine the hierarchical order of soil taxanomy

Order: At this highest level of generalisation, the soils are distinguished on the basis of the degree of horizon development and the kinds of horizons present. There are eleven orders whose names end in  sol (Latin, solum, soil).

Suborder:  The orders are subdivided into suborders on the basis of physical , chemical and morphological properties  that reflect the presence or absence of waterlogging and vegetation. Each order has a number of suborders and as many as 47 suborders are recognised. 

Greatgroup:  This category contains soils that have same kinds  of horizons in the same sequence having similar temperature, moisture regimes and also have similar base status. More than 230 greatgroups are recognised. 

Subgroup:  Three kinds of subgroups have been recognised; these are  typic groups, intergrades  and extragrades. The  typic  groups show the central properties of the greatgroup; the intergrade subgroup shows properties of more than one greatgroup while the extragrade subgroup has properties which do not belong to any greatgroup. More than 1200 subgroups are recognised. 

Family: In this category the soils have been grouped together largely on the basis of physical and mineralogical properties that are important for plant growth. On the basis of properties like soil texture, temperature regime, mineralogy and  thickness of the soil permeable to the roots, as many as 6600 families of soils have been recognised. 

Series:  The soil series is the most specific unit of classification which consists of soils that are similar in all major profile characteristics. Conc eptually it represents a contiguous polypedon, however in the field it may include aggregates of polypedons and the associated inclusions. In field soil surveys the soil series are sometimes further subdivided into soil phases on the basis of surface soil  texture or other characteristics.  

 


Related Discussions:- Determine the hierarchical order of soil taxanomy

Define age related changes in nervous system, Define age related changes in...

Define age related changes in Nervous system Varying degrees of atrophy in neuronal areas can be observed neurotransmitter functions are hampered. The cholinergic deficits seen

Explain the functions of unicellular organism, Explain the Functions of Uni...

Explain the Functions of Unicellular Organism You might wonder what functions a single-celled organism is capable of performing. Surprisingly, a unicellular organism is able to

The fujita scale is used to classify intensities of, The Fujita Scale is us...

The Fujita Scale is used to classify intensities of: Tornadoes

Mineral has the name "bloodstone", This mineral has the name "bloodstone" b...

This mineral has the name "bloodstone" because it provides a deep red color on a streak test. What is its chemical formula? Fe 2 O 3

Radioactive Decay, Can a radioactive element completely decay so that it is...

Can a radioactive element completely decay so that it is all stable matter?

Introduction to identification of compressed gases , INTRODUCTION : You wo...

INTRODUCTION : You would recall from your study of Unit 11 that LPG (liquefied petroleum gas) and other compressed gases can pose a danger in the lab. The gas (LPG) supply distrib

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd